Pipe-molding pit



(NoM0ae1.) A

DTM. LONG L J. KILLER.

PIPE MQLDING PIT.

, 10.293,480.. `Patented Feb, 12, V1884.

wmvfssfs UNITED STATES PATENT OFFICE.

DENNIS M. LONG AND JOHN KILLER, OF LOUISVILLE, KENTUCKY. u

PIPE-MOLDING PiT.

SPECIFICATION forming part of Letters Patent No. 293,480, dated February 12,. 1884.

` Application {lcdNovember 30, 1883. (No model.)

To arf/Z whom it nfl/wy concern:

Our invention relates to such-molding or4 ramming vpits' as are used in the manufacture of cast-iron pipes; and it consists, generally, of the combination of a wall-plate and its attachments; and the object is to hold a double iiask for casting iron pipe in position while being rammed, and to prevent it from being raised from the bottom of the pit whenv the.

patterns are being drawn up out of the molds.` In the accompanying drawings, Figure 1 is j an elevation, and Fig. 2 a plan, of our improvement, the same letters representing like parts in each. b

Ais the swinging bar,preferably of wrought- Iron.

B are lugs cast on and forming part of the wall-plate E.

G is a boltV or pin securing the swinging bar A. l

- D is the ramming-pit wall.

E is a wallplate built in and secured to the pit-fwall D.

F is a double flask.

' G is a projecting rib on the ask E.

H is a clamp for securing the cliillplate .I to the flask E.

I is a wedge for securing and holding the clamp H in position.

J is a chill-plate.

It has been found, in practice, in the use of double iasks, and in-drawing the two patterns from the molds at once, that the patterns, insteadl of themselves drawing, raise the flask up from the bottom of the pit. Ourimprove- 4o' ment overcomes this diiiculty, holds the flask securely in position, and facilitates the drawing of the patterns.

Ourimprovementconsists,moreparticularly, of the wall-plate E, built in and secured to the pit-wall D, furnished with the lugs B and carrying the swinging bars A, attached between the lugs to the plate by means of the bolt or pin C.

In practice, the bars A, previously to the reception into the pit of atlask to be rammed, are swung bac-k into the position occupied by the right-hand bar in Fig. 2, and the ask 4is lowered into the pit, set on, and secured to chillplate J by the clamp H and wedge I. The bars 'A are then swung forward and left projecting over the rib G of the aslr, as shown in Fig, l, and by the lefthand bar in Eig. 2, after which the iiask is rammed, the patterns drawn, and the bars Aagain swung back from :60 over and clear of the rib G, so as to allow the j flask to be swung from therammingpit to the oven, thus preparing the ramming-pit for the reception ot' another flask. 

